Hoist attachment for tractors



Sept. 18, 1934. H s MYERS 1,974,248

HoIsT ATTACHMENT FOR TRACTORS Original Filed May 28, 1928 3 Sheets-Sheet l /7 gnucnloz i? l fa #d SW anoto,

Sept. 18, 1934. H. s. MYERS `HOIS'I ATTACHMENT FOR TRACTORS Original Filed May 28, 1928 3 Sheets-Sheet Septo 18, 1934. Hl s. MYERS HOIST ATTACHMENT FOR TRACTORS Original Filed May 28, 1928 3 Sheets-Sheet 3 Patented Sept. 18, 1934 .1,974,248 Hors'r ATTACHMENT Foa 'micronsV Harry S. Myers, Van, Pa. Application May 28, 1928, Serial o. 281,167 n Renewed May 12,

4 Claims. (Cl. 2511-166) This invention has relation to equipment attachments for tractors and more particularly to a hoisting attachment adapted to be mounted upon the rear of the tractor and embodies the same general principle and mode of operation as the hoist attachment as shown and described and claimed in my Patent No. 1,557,470 granted October 13, 1925, for Hoist attachment for tractors.

The object of the invention isthe renement of the details of construction and of attachment with a View to permitting the use of a wider and larger spool. It will be appreciated that a given space only is available between the tractive wheels and that there is also a limit to the amount of overhang which is practicable in attaching a 4winch to the rear of the tractor.

Other objects and advantages ofthe inven tionY will hereinafter appear in the following description and the novel features thereof will be 2 particularly pointed out in the appended claims.

' Like reference numerals indicate like parts throughout the several gures of the drawings in which:

Fig. 1 is a side elevation of the rear of the tractor, having a hoist attachment mounted thereto, parts of the tractor being omitted for the purpose of showing the details of construction.

Fig. 2 is a plan of the same parts.

the winch spool shown in section.

Fig. 4 is an elevation of some of the parts only. Fig. 5 is a detail showing the shifting yoke. Fig. 6 is a perspective of a part of the frame with brake band and gear guard mounted thereon. l

Fig. 7 is an elevation similar to Fig. 4 taken from the other side of the machine, and

Fig. 8 is a detail of the brake band adjustment. VFor the purpose of giving a clear description,

deemed as made up of a number of assemblies oi elements as follows:

1. rIhe frame assembly comprising ally those parts having no movement, such as attaching angles, side frames, guards, etc. n

2. The spool assembly comprising' the parts having a rotary movement wound line. l Y

3. The countershaft assembly comprising the pinion shift, brake lever, and associated parts.

4. The drive assemblycomprising the sprockets and chain for transmitting power from the pulley shaft to the countershaft.

5. The holding pawl assembly.

Fig. 3 is a rear elevation of these parts withY the hoist or winch attachment illustrated will be and carrying the 6. The extension clutch control assembly. `Each of these assemblies will be described in detail and individual functions thereof pointed out. Their joint operationsv will then be set forth.

The skeleton winch frame is shown in Figure 6 as comprising the cross angles 10 and 11, at the-ends of which are vertical angles 12 and. 13. These four parts constitute a rectangular frame base'and are connected together by means of 65 suitableibolts at their junctions. To the angles 12 and 13 are attached respectively the side frameplatesl and 15 which have been provided .with suitable boltfholes which have been indicated in Figure 6. by the numerals 16, 17, 18, 19and 20 in plate`14,and by 16', 17', 18', and 19 inplate. 15. VIt will be appreciated that these plates extend when attached to the vertical angles rearward of the cross angles 10 and 11.

The cross angles 10 and 11 are provided with 75 bolt holes 21, 21', 22 and 22 and to the rear of these angles are attached the attaching angles 24 and 25 by means of'bolts passing through these bolt, holes and corresponding bolt holes in the attaching angles. Thev attaching angles are the means for securing the hoist attachment to the differential housing of the tractor and for this purpose they are provided each with four holes through which cap screws may be passed into the differential housing.

These attaching angles are identical in construction and either may be used as a substitute for the other. The angles 10 and 11 are further provided with bolt holes 26, 27, 28, 29 for the attachment of loops 30 and 31, which constitute 90 the means for further securing the hoist frame to the axle housings of the tractor.

Rearward of the angles 10 and 11 the frame plates are provided with the bolt holes through which the clevis bolt 32 passes and supports the clevis 33. It will beappreciated that these are duplicated on each side of the machine and constitute a means'for the attachment to the winch frame of anchoring cables.

To the side plates are attached spool bearing cases 34 and 35. These cases are formed with attaching legs 36 and 37 apertured to receive bolts which also pass through the holes 18 and 19 and 18 and 19 in plates 14 and 15. These cases contain roller bearings in which is mounted the shaft of the drum.

.On the upper edge of the plates 14 and 15 are likewise mounted bearing cases 38 and 39 holding roller;bearings in which are mountedthe drive -f shaft. Itwill be appreciated that these casings l isprovided with appreciated that grooved end.

this extended end is have legs 36 and 37' which are apertured and constitute the means for attaching the cases to the plates. It will also be appreciated that these bearing eases are provided with suitable lubricant devices through which grease may be supplied the bearings.

A gear guard 49 is attached to the rear of the angle No. l and at one end o f the frame and extends upward and over the .pinion'on'the drive shaft and around the drum gear and is attached to the lower angle 1l at 40. The guard is held steadied by the connector 41 which is riveted to the guard at 42 and at its opposite end 43 is bolted to an apertured lug 44 onJ the bearing case 35. The guard is further secured by providing a U bolt 45 so that it might be h eld to the shift rod in a manner to be hereinafter described.

A sprocket guard 46 is supported at one end by the standard 47 and at its other end is secured to an apertured lug 48 rising from the bearing case 34'. On this guard is mounted a throttle supporting an eyeebolt 49. in which is movable the throttle control rod 5.0..

The spool comprises a shaft 51 rotatable in the bearing cases 34 and 35 and held from longitudinal displacement by the closed end of said cases. Splined to the shaft are hubs 5,2l and 53 having formed integral therewith ilanges 54 and 5.5, the flange 5.4 being extended to provide a brake drum 56 and the ange 55 being provided with boltholes by means of which a ring gear 57 is attached to the. ange.. Upon shoulders on these anges is driven a spool shank 58 and tie rods 59. are employed to secure the parts together,

holes being provided in the hubs for this purpose:

Spacing washers 60a and 61 lie. between the, hubs and the. adjacent bearing case. The usual crossover 62A is provided for the spool. Suitable pro.- vision is madeA for the attachment tothe spool of a Cable.

In` the. bearing cases 38. and 39. is mounted a drive, shaft 63..v on which slides a pinion 6,4, a key 65. being provided. in the. shaft to. permit of the sliding movement oi the. pinion. The. shaft is extended. beyond, the. bearing case. 3.8. and upon mounted a collar 66.heldz by a. suitable. set screw or. other means. to the. shaft. A large, sprocket 67 is bolted to the. collar 66. A chain. 68 extends over the. sprocket 6.7.? and over a small sprocket 69 on the belt pulley. shaft of the throttle. parts just'described. are. inclosed in, a guard. 70.

Lt will beappreciated that power derived from the belt pulley shaft of thethrottle istransmitted. e from. the. sprocket 69.through the. chain 68. tothe. sprocket 6.7.and that there is a. reduction. in speedin this transmission. rlhe. rotary. movement of.v

the. sprocket 67 is to'A the4 pinion 64, the. pinion.A is in Figurezv thepinion is-not so meshed.

imparted to the shaft 63-i hence Elor Vthe purpose of. shifting. thispinion. into.

outY of mesh. with. the ringgear there` is. provided a rod 71 coupling 7.2. which is. actuatedbythe shift. lever 73 which. has a coupling. The endL 75 of the shift lever. passes cross angle. l0 While.v the upper end. of said4 lever when the upper end of theshift lever is moved towardthegear. endof..the.spoo1 it willi. carry the.. coupling 724 and. since.. this. cou.- at.. its. end the. yoke. 7.7..engaging` a. in. the. pinion. 64, that. the4 pinion.

pling carries..

and to. the ring. gearA 57 when mesh. therewith. Asv shown inv on which is` slidably mounted a.

pivotal4 connection. at.- 74 to said:

a suitable handle.76. t wilLbe itself will be moved into mesh with the ring gear. The teeth on the pinion may be tapered to facilitate this meshing.

The rod 71 is mounted in apertured lug 78 on bearing case 38 and a similar lug 79 on bearing case 39. Cotter pins may be provided at the ends of the rod beyond the lugs 78 and '79 to hold the rod in position against longitudinal movement, and a cotter pin 8O as well as a washer 8l may loe provided to limit the movement oi the shift lever toward the sprocket end of the winch.

The rod 7l is encircled by the U bolt 45 and the clamp element 82 is inserted between the guard 40 and the rod so that the guard may be tightly ecurcd to, the rod by the nuts 83.

Qn the shaft 71 there is also mounted opposite the brake drum an eccentric 84 which has an extension 85 to which is bolted the brake lever 86. It will be appreciated that the rod extends through the eccentric and its extension, and as well through one end of the brake lever, so Vtlfiat any movement of the brake lever will be imparted to the extension and to the eccentric. A cotter pin 87 andwasher 88 are employed to hold the eccentric against movement one direction on 190 the rod while the lug 78 will hold these partsV against movement in the opposite direction. It will be appreciated that the Ieccentric is; free to rotate orthe rod.

Looped about the eccentric is one end 89 of the brake band .90 which encircles; the brake drum, is, held by the U clip 91 riveted to the b and, andextends to a point near the angle 10, whereby a maximum of braking surfacefis produced. It will be appreciated that the lining 92 isV riveted to the brake b and throughout its gripping radius.

Adjustment ofthe brake band yis accomplishedv by a novel means. The end- 9-3- of the brakeband is longitudinally curved' and is welded to a sleeve 94 of material off the same general thickness and' lflf` the sleeve is mounted upon 'a longloolt 95 passing cross angle 10 andthe cross angle 11, the head of thebolt lying upon the upper sleeve on the bolt to4 any elevation desirable for the purpose of( adjusting the length of the brake band, as will be appreciatedfromr an inspection` of Figure'B.

Referring to Figures land 4 the Vbrake drumas shown is provided with lugs 97 on the inner face thereof and mount-ed' upon the plate 1'4 is a holding* pawl" 98 which may be manually lifted, into position to cooperate with a lug 97in holding the spool against reverse movement or which may be dropped out of such engagement topermitv of such movement. 1

The hOStirlg device is. provided.' with. means whereby the tractor clutch pedal-may be de,- pressed to cut oirv the power being deliveredfto'the sprocket 69 from the tractor engine, This com prises a rod 99 mounted at one end'in a strapbear- 1.0.25 which is hooked., at: 14o its upper end to engage over the throttle clutch pedalTlOB; the rod` is extendedi backward where it,

is supported in a secondstrap bearing 104 which is hung from the plate 14 this rod is bent to formV a handle 105.0f-'any desired design which willperg- 145 mit of itsbeing tilted:-torelease the clutch.

From. the. detailed description4 of the partsas they form thediferent assemblies comprised in the hoist attachment;the-functions of the-several! parts as well as thoseofthe-assemblieslthemselves ought to be clear. It remains, therefore, for a full description only a recital of the conjoint use of the several assemblies.

Power from the tractor imparted to the sprocket 69, as heretofore explained will cause a rotation in the pinion 64 and this rotation will be transferred to the ring gear where it will cause a rotation of the spool of the winch. The pinion is shifted into and out of mesh with the gear by the shift lever 73 and it will be appreciated that the construction of parts involved in the pinion shifting mechanism and in the brake band mechanism is very simple. The single rod 71 which remains stationary in the machine is suioient to act as a support for the yoke, the coupling, the shift lever, and the brake eccentric. The brake eccentric is likewise very simple in that the extension is attached readily to the handle at one point, and by reason of the fact that the rod 71 passes through both the lever and the eccentric there is no need for a second point of attachment between the extension of the eccentric and the lever. The adjustment of the brake band also embodies a very simple construction and permits of an adjustment by simply tightening up the nuts 96 from a point which is readily accessible. 'I'he guards are simply mounted upon the frame. The frame itself is constructed of stock material and permits the widest possible spool to be used in the winch.

The frame is easily attached and strongly secured to the tractor by its attachment to the differential housing and to the axle housing as well.

Having described my invention that I claim is new, what I desire to secure by Letters Patent is:

1. In a piece of tractor equipment, a frame comprising cross angle members', attaching angles secured to the cross angles for attachment of the frame to the tractor, vertical angles secured at the ends of the cross angles, and supporting plates attached to the vertical angles, between which the equipment elements are mounted.

2. The combination of claim 1, in which the supporting plates extend forward and rearward of the vertical angles, the equipment elements being supported forward above and upward of the connection of plates and angles, and anchoring elements being supported upon the rear of the plates.

3. In a piece of tractor equipment, comprising a frame, a winch spool and shiftable drive element therefor, the sub-combination comprising a rod extending across the space occupied by the spool, and supporting bearings for said rod extending from the frame at either side of the spool, said rod carrying between said supporting bearings] shifting means for said drive element and brake applying means for said spool comprising an eccentric and a handle attached to said eccentric.

4. In a tractor-equipment combination, a frame supporting a spool embodying a brake drum, said frame having aligned openings, a brake band for said brake drum and means for applying braking pressure to said brake band, an adjustment means for said brake band comprising a bolt passing through said aligned openings in said frame, a sleeve upon said bolt extending through one of said aligned frame openings and to which one end of the brake band is attached, and means for adjusting said sleeve upon said bolt.

HARRY S. MYERS. 

